[Buildroot] [PATCH 1/1] package/qemu: add symlink to target qemu-system

[Buildroot] [PATCH 1/1] package/qemu: add symlink to target qemu-system

[Christian Stewart via buildroot]

Scripts which use the buildroot host system to execute a qemu for the compiled
buildroot output can use the symlink at host/bin/qemu-system to execute the
appropriate qemu-system for the target, for example qemu-system-riscv64.

Signed-off-by: Christian Stewart <christian@paral.in>
---
 package/qemu/qemu.mk | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/package/qemu/qemu.mk b/package/qemu/qemu.mk
index 9c2b819174..1bcffc2340 100644
--- a/package/qemu/qemu.mk
+++ b/package/qemu/qemu.mk
@@ -400,6 +400,12 @@ define HOST_QEMU_INSTALL_CMDS
 	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) install
 endef
 
+# install symlink to qemu-system
+define HOST_QEMU_POST_INSTALL_SYMLINK
+	ln -sf ./qemu-system-$(HOST_QEMU_ARCH) $(HOST_DIR)/bin/qemu-system
+endef
+HOST_QEMU_POST_INSTALL_HOOKS += HOST_QEMU_POST_INSTALL_SYMLINK
+
 $(eval $(host-generic-package))
 
 # variable used by other packages
-- 
2.35.1

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[Buildroot] [PATCH v2 1/1] package/go: add support for riscv64 architecture

[Christian Stewart via buildroot]

Enable the supported "riscv64" GOARCH.

Add a patch to fix a build failure due to GOARCH leaking into the calls to the
go-bootstrap compiler. Unsets the GOARCH before calling go-bootstrap.

PR: https://github.com/golang/go/pull/52362

Signed-off-by: Christian Stewart <christian@paral.in>

---

v1 -> v2:

 - fixed build error with go-bootstrap

Signed-off-by: Christian Stewart <christian@paral.in>
---
 ...explicit-option-for-crosscompilation.patch |   8 +-
 ...set-environment-before-generating-bu.patch | 111 ++++++++++++++++++
 package/go/Config.in.host                     |   2 +-
 package/go/go.mk                              |   2 +
 4 files changed, 118 insertions(+), 5 deletions(-)
 create mode 100644 package/go/0002-build-bootstrap-set-environment-before-generating-bu.patch

diff --git a/package/go/0001-build.go-explicit-option-for-crosscompilation.patch b/package/go/0001-build.go-explicit-option-for-crosscompilation.patch
index f76c5b1d03..a32a6ee355 100644
--- a/package/go/0001-build.go-explicit-option-for-crosscompilation.patch
+++ b/package/go/0001-build.go-explicit-option-for-crosscompilation.patch
@@ -1,4 +1,4 @@
-From e1382a731a726293e30901038c6870fa77ef6095 Mon Sep 17 00:00:00 2001
+From 86fa3da18b5c73cc84dec91d92db4ae95f288bdc Mon Sep 17 00:00:00 2001
 From: Angelo Compagnucci <angelo@amarulasolutions.com>
 Date: Tue, 8 May 2018 16:08:44 +0200
 Subject: [PATCH] build.go: explicit option for crosscompilation
@@ -17,10 +17,10 @@ Signed-off-by: Anisse Astier <anisse@astier.eu>
  1 file changed, 2 insertions(+), 1 deletion(-)
 
 diff --git a/src/cmd/dist/build.go b/src/cmd/dist/build.go
-index 99d1db5..eb4097f 100644
+index d37c3f83ef..d838485bd3 100644
 --- a/src/cmd/dist/build.go
 +++ b/src/cmd/dist/build.go
-@@ -252,12 +252,13 @@ func xinit() {
+@@ -273,12 +273,13 @@ func xinit() {
  // $CC_FOR_goos_goarch, if set, applies only to goos/goarch.
  func compilerEnv(envName, def string) map[string]string {
  	m := map[string]string{"": def}
@@ -36,5 +36,5 @@ index 99d1db5..eb4097f 100644
  		}
  		m[""] = env
 -- 
-2.7.4
+2.35.1
 
diff --git a/package/go/0002-build-bootstrap-set-environment-before-generating-bu.patch b/package/go/0002-build-bootstrap-set-environment-before-generating-bu.patch
new file mode 100644
index 0000000000..44b3fbecc2
--- /dev/null
+++ b/package/go/0002-build-bootstrap-set-environment-before-generating-bu.patch
@@ -0,0 +1,111 @@
+From 00f3f4ee0d477779c87e4e60b08708362670e122 Mon Sep 17 00:00:00 2001
+From: Christian Stewart <christian@paral.in>
+Date: Thu, 14 Apr 2022 13:34:26 -0700
+Subject: [PATCH] build: bootstrap: set environment before generating buildcfg
+
+The GOOS and GOARCH environment variables should be unset before calling
+mkbuildcfg. This change fixes a build failure when GOARCH=riscv64.
+
+Building Go toolchain1 using go-1.4-bootstrap-20171003.
+src/cmd/compile/internal/ssa/rewriteRISCV64.go:4814
+invalid operation: y << x (shift count type int64, must be unsigned integer)
+
+There is a build issue with go1.4 with the riscv64 code: however, why is the
+riscv64 code being compiled at all?
+
+GOARCH is set when calling mkbuildcfg, so go1.4 is trying to compile riscv64.
+---
+ src/cmd/dist/buildtool.go | 56 ++++++++++++++++++++-------------------
+ 1 file changed, 29 insertions(+), 27 deletions(-)
+
+diff --git a/src/cmd/dist/buildtool.go b/src/cmd/dist/buildtool.go
+index 036f8c52fa..73f6524969 100644
+--- a/src/cmd/dist/buildtool.go
++++ b/src/cmd/dist/buildtool.go
+@@ -112,9 +112,6 @@ func bootstrapBuildTools() {
+ 	}
+ 	xprintf("Building Go toolchain1 using %s.\n", goroot_bootstrap)
+ 
+-	mkbuildcfg(pathf("%s/src/internal/buildcfg/zbootstrap.go", goroot))
+-	mkobjabi(pathf("%s/src/cmd/internal/objabi/zbootstrap.go", goroot))
+-
+ 	// Use $GOROOT/pkg/bootstrap as the bootstrap workspace root.
+ 	// We use a subdirectory of $GOROOT/pkg because that's the
+ 	// space within $GOROOT where we store all generated objects.
+@@ -126,6 +123,34 @@ func bootstrapBuildTools() {
+ 	base := pathf("%s/src/bootstrap", workspace)
+ 	xmkdirall(base)
+ 
++	// Set up environment for invoking Go 1.4 go command.
++	// GOROOT points at Go 1.4 GOROOT,
++	// GOPATH points at our bootstrap workspace,
++	// GOBIN is empty, so that binaries are installed to GOPATH/bin,
++	// and GOOS, GOHOSTOS, GOARCH, and GOHOSTOS are empty,
++	// so that Go 1.4 builds whatever kind of binary it knows how to build.
++	// Restore GOROOT, GOPATH, and GOBIN when done.
++	// Don't bother with GOOS, GOHOSTOS, GOARCH, and GOHOSTARCH,
++	// because setup will take care of those when bootstrapBuildTools returns.
++
++	defer os.Setenv("GOROOT", os.Getenv("GOROOT"))
++	os.Setenv("GOROOT", goroot_bootstrap)
++
++	defer os.Setenv("GOPATH", os.Getenv("GOPATH"))
++	os.Setenv("GOPATH", workspace)
++
++	defer os.Setenv("GOBIN", os.Getenv("GOBIN"))
++	os.Setenv("GOBIN", "")
++
++	os.Setenv("GOOS", "")
++	os.Setenv("GOHOSTOS", "")
++	os.Setenv("GOARCH", "")
++	os.Setenv("GOHOSTARCH", "")
++
++	// Create the build config files.
++	mkbuildcfg(pathf("%s/src/internal/buildcfg/zbootstrap.go", goroot))
++	mkobjabi(pathf("%s/src/cmd/internal/objabi/zbootstrap.go", goroot))
++
+ 	// Copy source code into $GOROOT/pkg/bootstrap and rewrite import paths.
+ 	writefile("module bootstrap\n", pathf("%s/%s", base, "go.mod"), 0)
+ 	for _, dir := range bootstrapDirs {
+@@ -172,30 +197,6 @@ func bootstrapBuildTools() {
+ 		})
+ 	}
+ 
+-	// Set up environment for invoking Go 1.4 go command.
+-	// GOROOT points at Go 1.4 GOROOT,
+-	// GOPATH points at our bootstrap workspace,
+-	// GOBIN is empty, so that binaries are installed to GOPATH/bin,
+-	// and GOOS, GOHOSTOS, GOARCH, and GOHOSTOS are empty,
+-	// so that Go 1.4 builds whatever kind of binary it knows how to build.
+-	// Restore GOROOT, GOPATH, and GOBIN when done.
+-	// Don't bother with GOOS, GOHOSTOS, GOARCH, and GOHOSTARCH,
+-	// because setup will take care of those when bootstrapBuildTools returns.
+-
+-	defer os.Setenv("GOROOT", os.Getenv("GOROOT"))
+-	os.Setenv("GOROOT", goroot_bootstrap)
+-
+-	defer os.Setenv("GOPATH", os.Getenv("GOPATH"))
+-	os.Setenv("GOPATH", workspace)
+-
+-	defer os.Setenv("GOBIN", os.Getenv("GOBIN"))
+-	os.Setenv("GOBIN", "")
+-
+-	os.Setenv("GOOS", "")
+-	os.Setenv("GOHOSTOS", "")
+-	os.Setenv("GOARCH", "")
+-	os.Setenv("GOHOSTARCH", "")
+-
+ 	// Run Go 1.4 to build binaries. Use -gcflags=-l to disable inlining to
+ 	// workaround bugs in Go 1.4's compiler. See discussion thread:
+ 	// https://groups.google.com/d/msg/golang-dev/Ss7mCKsvk8w/Gsq7VYI0AwAJ
+@@ -217,6 +218,7 @@ func bootstrapBuildTools() {
+ 		cmd = append(cmd, "-toolexec="+tool)
+ 	}
+ 	cmd = append(cmd, "bootstrap/cmd/...")
++
+ 	run(base, ShowOutput|CheckExit, cmd...)
+ 
+ 	// Copy binaries into tool binary directory.
+-- 
+2.35.1
+
diff --git a/package/go/Config.in.host b/package/go/Config.in.host
index e82ab6e81a..8be86103ea 100644
--- a/package/go/Config.in.host
+++ b/package/go/Config.in.host
@@ -5,7 +5,7 @@ config BR2_PACKAGE_HOST_GO_TARGET_ARCH_SUPPORTS
 	depends on BR2_PACKAGE_HOST_GO_BOOTSTRAP_ARCH_SUPPORTS
 	depends on (BR2_arm && BR2_TOOLCHAIN_SUPPORTS_PIE) || BR2_aarch64 \
 		|| BR2_i386 || BR2_x86_64 || BR2_powerpc64le \
-		|| BR2_mips64 || BR2_mips64el || BR2_s390x
+		|| BR2_mips64 || BR2_mips64el || BR2_riscv || BR2_s390x
 	depends on !BR2_ARM_CPU_ARMV4
 	# MIPS R6 support in Go has not yet been developed.
 	depends on !BR2_MIPS_CPU_MIPS64R6
diff --git a/package/go/go.mk b/package/go/go.mk
index 3df16c9a68..ba0da74b86 100644
--- a/package/go/go.mk
+++ b/package/go/go.mk
@@ -63,6 +63,8 @@ else ifeq ($(BR2_mips64),y)
 GO_GOARCH = mips64
 else ifeq ($(BR2_mips64el),y)
 GO_GOARCH = mips64le
+else ifeq ($(BR2_riscv),y)
+GO_GOARCH = riscv64
 else ifeq ($(BR2_s390x),y)
 GO_GOARCH = s390x
 endif
-- 
2.35.1

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Re: [Buildroot] [PATCH v2 1/1] package/go: add support for riscv64 architecture

[Christian Stewart via buildroot]

[-- Attachment #1.1: Type: text/plain, Size: 8868 bytes --]

All,

I'll send a V3, this patch was in my "outgoing" folder & was double-sent
accidentally.

Apologies for the double-send...

Best regards,
Christian Stewart

On Tue, May 10, 2022 at 5:40 PM Christian Stewart <christian@paral.in>
wrote:

> Enable the supported "riscv64" GOARCH.
>
> Add a patch to fix a build failure due to GOARCH leaking into the calls to
> the
> go-bootstrap compiler. Unsets the GOARCH before calling go-bootstrap.
>
> PR: https://github.com/golang/go/pull/52362
>
> Signed-off-by: Christian Stewart <christian@paral.in>
>
> ---
>
> v1 -> v2:
>
>  - fixed build error with go-bootstrap
>
> Signed-off-by: Christian Stewart <christian@paral.in>
> ---
>  ...explicit-option-for-crosscompilation.patch |   8 +-
>  ...set-environment-before-generating-bu.patch | 111 ++++++++++++++++++
>  package/go/Config.in.host                     |   2 +-
>  package/go/go.mk                              |   2 +
>  4 files changed, 118 insertions(+), 5 deletions(-)
>  create mode 100644
> package/go/0002-build-bootstrap-set-environment-before-generating-bu.patch
>
> diff --git
> a/package/go/0001-build.go-explicit-option-for-crosscompilation.patch
> b/package/go/0001-build.go-explicit-option-for-crosscompilation.patch
> index f76c5b1d03..a32a6ee355 100644
> --- a/package/go/0001-build.go-explicit-option-for-crosscompilation.patch
> +++ b/package/go/0001-build.go-explicit-option-for-crosscompilation.patch
> @@ -1,4 +1,4 @@
> -From e1382a731a726293e30901038c6870fa77ef6095 Mon Sep 17 00:00:00 2001
> +From 86fa3da18b5c73cc84dec91d92db4ae95f288bdc Mon Sep 17 00:00:00 2001
>  From: Angelo Compagnucci <angelo@amarulasolutions.com>
>  Date: Tue, 8 May 2018 16:08:44 +0200
>  Subject: [PATCH] build.go: explicit option for crosscompilation
> @@ -17,10 +17,10 @@ Signed-off-by: Anisse Astier <anisse@astier.eu>
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
>  diff --git a/src/cmd/dist/build.go b/src/cmd/dist/build.go
> -index 99d1db5..eb4097f 100644
> +index d37c3f83ef..d838485bd3 100644
>  --- a/src/cmd/dist/build.go
>  +++ b/src/cmd/dist/build.go
> -@@ -252,12 +252,13 @@ func xinit() {
> +@@ -273,12 +273,13 @@ func xinit() {
>   // $CC_FOR_goos_goarch, if set, applies only to goos/goarch.
>   func compilerEnv(envName, def string) map[string]string {
>         m := map[string]string{"": def}
> @@ -36,5 +36,5 @@ index 99d1db5..eb4097f 100644
>                 }
>                 m[""] = env
>  --
> -2.7.4
> +2.35.1
>
> diff --git
> a/package/go/0002-build-bootstrap-set-environment-before-generating-bu.patch
> b/package/go/0002-build-bootstrap-set-environment-before-generating-bu.patch
> new file mode 100644
> index 0000000000..44b3fbecc2
> --- /dev/null
> +++
> b/package/go/0002-build-bootstrap-set-environment-before-generating-bu.patch
> @@ -0,0 +1,111 @@
> +From 00f3f4ee0d477779c87e4e60b08708362670e122 Mon Sep 17 00:00:00 2001
> +From: Christian Stewart <christian@paral.in>
> +Date: Thu, 14 Apr 2022 13:34:26 -0700
> +Subject: [PATCH] build: bootstrap: set environment before generating
> buildcfg
> +
> +The GOOS and GOARCH environment variables should be unset before calling
> +mkbuildcfg. This change fixes a build failure when GOARCH=riscv64.
> +
> +Building Go toolchain1 using go-1.4-bootstrap-20171003.
> +src/cmd/compile/internal/ssa/rewriteRISCV64.go:4814
> +invalid operation: y << x (shift count type int64, must be unsigned
> integer)
> +
> +There is a build issue with go1.4 with the riscv64 code: however, why is
> the
> +riscv64 code being compiled at all?
> +
> +GOARCH is set when calling mkbuildcfg, so go1.4 is trying to compile
> riscv64.
> +---
> + src/cmd/dist/buildtool.go | 56 ++++++++++++++++++++-------------------
> + 1 file changed, 29 insertions(+), 27 deletions(-)
> +
> +diff --git a/src/cmd/dist/buildtool.go b/src/cmd/dist/buildtool.go
> +index 036f8c52fa..73f6524969 100644
> +--- a/src/cmd/dist/buildtool.go
> ++++ b/src/cmd/dist/buildtool.go
> +@@ -112,9 +112,6 @@ func bootstrapBuildTools() {
> +       }
> +       xprintf("Building Go toolchain1 using %s.\n", goroot_bootstrap)
> +
> +-      mkbuildcfg(pathf("%s/src/internal/buildcfg/zbootstrap.go", goroot))
> +-      mkobjabi(pathf("%s/src/cmd/internal/objabi/zbootstrap.go", goroot))
> +-
> +       // Use $GOROOT/pkg/bootstrap as the bootstrap workspace root.
> +       // We use a subdirectory of $GOROOT/pkg because that's the
> +       // space within $GOROOT where we store all generated objects.
> +@@ -126,6 +123,34 @@ func bootstrapBuildTools() {
> +       base := pathf("%s/src/bootstrap", workspace)
> +       xmkdirall(base)
> +
> ++      // Set up environment for invoking Go 1.4 go command.
> ++      // GOROOT points at Go 1.4 GOROOT,
> ++      // GOPATH points at our bootstrap workspace,
> ++      // GOBIN is empty, so that binaries are installed to GOPATH/bin,
> ++      // and GOOS, GOHOSTOS, GOARCH, and GOHOSTOS are empty,
> ++      // so that Go 1.4 builds whatever kind of binary it knows how to
> build.
> ++      // Restore GOROOT, GOPATH, and GOBIN when done.
> ++      // Don't bother with GOOS, GOHOSTOS, GOARCH, and GOHOSTARCH,
> ++      // because setup will take care of those when bootstrapBuildTools
> returns.
> ++
> ++      defer os.Setenv("GOROOT", os.Getenv("GOROOT"))
> ++      os.Setenv("GOROOT", goroot_bootstrap)
> ++
> ++      defer os.Setenv("GOPATH", os.Getenv("GOPATH"))
> ++      os.Setenv("GOPATH", workspace)
> ++
> ++      defer os.Setenv("GOBIN", os.Getenv("GOBIN"))
> ++      os.Setenv("GOBIN", "")
> ++
> ++      os.Setenv("GOOS", "")
> ++      os.Setenv("GOHOSTOS", "")
> ++      os.Setenv("GOARCH", "")
> ++      os.Setenv("GOHOSTARCH", "")
> ++
> ++      // Create the build config files.
> ++      mkbuildcfg(pathf("%s/src/internal/buildcfg/zbootstrap.go", goroot))
> ++      mkobjabi(pathf("%s/src/cmd/internal/objabi/zbootstrap.go", goroot))
> ++
> +       // Copy source code into $GOROOT/pkg/bootstrap and rewrite import
> paths.
> +       writefile("module bootstrap\n", pathf("%s/%s", base, "go.mod"), 0)
> +       for _, dir := range bootstrapDirs {
> +@@ -172,30 +197,6 @@ func bootstrapBuildTools() {
> +               })
> +       }
> +
> +-      // Set up environment for invoking Go 1.4 go command.
> +-      // GOROOT points at Go 1.4 GOROOT,
> +-      // GOPATH points at our bootstrap workspace,
> +-      // GOBIN is empty, so that binaries are installed to GOPATH/bin,
> +-      // and GOOS, GOHOSTOS, GOARCH, and GOHOSTOS are empty,
> +-      // so that Go 1.4 builds whatever kind of binary it knows how to
> build.
> +-      // Restore GOROOT, GOPATH, and GOBIN when done.
> +-      // Don't bother with GOOS, GOHOSTOS, GOARCH, and GOHOSTARCH,
> +-      // because setup will take care of those when bootstrapBuildTools
> returns.
> +-
> +-      defer os.Setenv("GOROOT", os.Getenv("GOROOT"))
> +-      os.Setenv("GOROOT", goroot_bootstrap)
> +-
> +-      defer os.Setenv("GOPATH", os.Getenv("GOPATH"))
> +-      os.Setenv("GOPATH", workspace)
> +-
> +-      defer os.Setenv("GOBIN", os.Getenv("GOBIN"))
> +-      os.Setenv("GOBIN", "")
> +-
> +-      os.Setenv("GOOS", "")
> +-      os.Setenv("GOHOSTOS", "")
> +-      os.Setenv("GOARCH", "")
> +-      os.Setenv("GOHOSTARCH", "")
> +-
> +       // Run Go 1.4 to build binaries. Use -gcflags=-l to disable
> inlining to
> +       // workaround bugs in Go 1.4's compiler. See discussion thread:
> +       //
> https://groups.google.com/d/msg/golang-dev/Ss7mCKsvk8w/Gsq7VYI0AwAJ
> +@@ -217,6 +218,7 @@ func bootstrapBuildTools() {
> +               cmd = append(cmd, "-toolexec="+tool)
> +       }
> +       cmd = append(cmd, "bootstrap/cmd/...")
> ++
> +       run(base, ShowOutput|CheckExit, cmd...)
> +
> +       // Copy binaries into tool binary directory.
> +--
> +2.35.1
> +
> diff --git a/package/go/Config.in.host b/package/go/Config.in.host
> index e82ab6e81a..8be86103ea 100644
> --- a/package/go/Config.in.host
> +++ b/package/go/Config.in.host
> @@ -5,7 +5,7 @@ config BR2_PACKAGE_HOST_GO_TARGET_ARCH_SUPPORTS
>         depends on BR2_PACKAGE_HOST_GO_BOOTSTRAP_ARCH_SUPPORTS
>         depends on (BR2_arm && BR2_TOOLCHAIN_SUPPORTS_PIE) || BR2_aarch64 \
>                 || BR2_i386 || BR2_x86_64 || BR2_powerpc64le \
> -               || BR2_mips64 || BR2_mips64el || BR2_s390x
> +               || BR2_mips64 || BR2_mips64el || BR2_riscv || BR2_s390x
>         depends on !BR2_ARM_CPU_ARMV4
>         # MIPS R6 support in Go has not yet been developed.
>         depends on !BR2_MIPS_CPU_MIPS64R6
> diff --git a/package/go/go.mk b/package/go/go.mk
> index 3df16c9a68..ba0da74b86 100644
> --- a/package/go/go.mk
> +++ b/package/go/go.mk
> @@ -63,6 +63,8 @@ else ifeq ($(BR2_mips64),y)
>  GO_GOARCH = mips64
>  else ifeq ($(BR2_mips64el),y)
>  GO_GOARCH = mips64le
> +else ifeq ($(BR2_riscv),y)
> +GO_GOARCH = riscv64
>  else ifeq ($(BR2_s390x),y)
>  GO_GOARCH = s390x
>  endif
> --
> 2.35.1
>
>

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Re: [Buildroot] [PATCH 1/1] package/qemu: add symlink to target qemu-system

[Arnout Vandecappelle]

On 11/05/2022 02:40, Christian Stewart via buildroot wrote:
> Scripts which use the buildroot host system to execute a qemu for the compiled
> buildroot output can use the symlink at host/bin/qemu-system to execute the
> appropriate qemu-system for the target, for example qemu-system-riscv64.
> 
> Signed-off-by: Christian Stewart <christian@paral.in>

  Applied to master, thanks.

  Regards,
  Arnout

> ---
>   package/qemu/qemu.mk | 6 ++++++
>   1 file changed, 6 insertions(+)
> 
> diff --git a/package/qemu/qemu.mk b/package/qemu/qemu.mk
> index 9c2b819174..1bcffc2340 100644
> --- a/package/qemu/qemu.mk
> +++ b/package/qemu/qemu.mk
> @@ -400,6 +400,12 @@ define HOST_QEMU_INSTALL_CMDS
>   	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) install
>   endef
>   
> +# install symlink to qemu-system
> +define HOST_QEMU_POST_INSTALL_SYMLINK
> +	ln -sf ./qemu-system-$(HOST_QEMU_ARCH) $(HOST_DIR)/bin/qemu-system
> +endef
> +HOST_QEMU_POST_INSTALL_HOOKS += HOST_QEMU_POST_INSTALL_SYMLINK
> +
>   $(eval $(host-generic-package))
>   
>   # variable used by other packages
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